Various screen-oriented programs, such as vi(1), must
be able to determine the current screen dimensions. As this is
achieved this through ioctl calls to the console
driver (such as syscons(4)) they will correctly determine the new
screen dimensions.

To make this more seamless, one can embed these commands in
the startup scripts so it takes place when the system boots.
To do this is add this line to /etc/rc.conf

allscreens_flags="VGA_80x60" # Set this vidcontrol mode for all virtual screens